The sale on W. A. Production’s newest auto-composing MIDI generator, InstaComposer 4, has started!
This article covers the latest InstaComposer 4 sale details, an overview of the plugin, and how it differs from the previous version, InstaComposer 3. This article will be updated whenever a new sale starts.
1. InstaComposer 4 Latest Sale Information
InstaComposer 4 is currently on sale.
InstaComposer 4 Release Sale: Until November 5, 2026
- (11/5) W. A. Production “InstaComposer 4” – a one-click auto-composing MIDI generator with a redesigned generation engine, built-in sounds and a mixer: $29.90
- Upgrade from InstaComposer 3: $10
InstaComposer 3 users can upgrade for $10 on the official product page. Purchases from the W. A. Production official site also come with free bonus gifts for buyers.
2. What Is W. A. Production “InstaComposer 4”?
A composing partner that generates MIDI in one click, from melodies, chords and drums to entire songs
W. A. Production’s InstaComposer 4 is a MIDI generator plugin that automatically generates MIDI based on rules and algorithms, covering chord progressions, melodies, riffs, basslines and drum patterns, all the way up to the structure of a complete song. As the fourth generation since the original release in 2021, it is a major update in which the core MIDI generation engine has been completely rebuilt as “MIDI Engine 2.0”. It adds two new generation modes (Arpeggiator and Rhythm V2), Foliage for adding ornamental notes to a melody, Groove controls for shaping the feel, and even a built-in instrument and mixer. You can regenerate results as many times as you like with a single button, and each result is unique. Generation is not trained on copyrighted songs or artists’ material; every result is built from scratch from the rules of music and algorithms, which keeps the risk of copyright infringement low and makes it easier to monetize and release the songs you make.
Key Features
- Generate a whole song in one click: Build the song structure (intro, verse, chorus, bridge, outro and so on), chord progression and the notes of every track with a single button. A “Chords & Notes” mode regenerates only chords and notes while keeping the structure, and a “Notes” mode regenerates only the notes.
- 6 tracks x 8 scenes: Each section has up to 6 independent tracks and 8 scenes, useful for exploring variations and arrangements. MIDI channels can be separated per track on output.
- Generation modes per element: In addition to modes such as Melody, Riff, Pad, Chord, Drums, Ostinato and Rhythm, version 4 newly adds Arpeggiator and Rhythm V2.
- Chord progression generator: Generates chord progressions that fit the scale. Raising Complexity gives richer progressions with tensions such as Maj7 and Add9, and slash chords are supported.
- Chord and scale analysis: Analyzes MIDI to detect chords, chord progressions, scales and tonal centers. The top 10 candidates are shown with scores, and you can swap in a different candidate.
- Rich scales: Supports many scales and modes including Major, Minor, Harmonic Minor, Melodic Minor, Pentatonic, Spanish and Arabic.
- MIDI import, editor and export: Import your own MIDI to mix with generated material, edit directly in the built-in MIDI editor, and drag and drop individual tracks or the entire song into your DAW.
- Flexible time signatures: You specify the number of beats per bar and notes per beat, so a wide range of time signatures such as 3/4, 6/8, 9/8 and 12/8 are supported.
- Loads presets from older versions: In addition to the factory presets, presets from InstaComposer 1, 2 and 3 can be loaded as they are.
The “Controls” Tab for Fine-Grained Control of Generation
In InstaComposer 4, you can fine-tune the character of the generated MIDI with the following parameter groups.
- Groove: Population (note density), Sustain (note length), Straight (emphasizes on-the-beat timing), Syncopation, Gallop (a driving feel from short-long combinations), Burst (clusters of notes) and Congestion (fills empty space with notes)
- Structure: Bar Structure (strength of pattern repetition within a bar) and Bar Combination (strength of pattern repetition across multiple bars)
- Pitch: Scale-Chord (probability of choosing chord tones versus scale notes) and Chromatic (probability of mixing in notes outside the scale)
- Harmony: How often harmony is added, the number of voices, their variation, and how closely they follow the motif
- Pattern: The probability of adding patterns and motifs, their length, how often they reappear, and how much they change over time
- Velocity / Time: Humanization of velocity and timing (amount and range of variation, synchronization between harmonies)
- Foliage: Growth (density of ornamental notes), Direction (pitch movement), Root Oct (center octave) and Velocity
- Strum: The probability, speed and frequency of adding a strumming effect to chords and harmonies
Play Sound Right Away with the Built-In Instrument and Mixer
Starting with version 4, InstaComposer is an instrument plugin with a built-in sound source. It includes an acoustic piano and General MIDI-style sounds, so you can play back and audition generated songs on the spot without routing the MIDI to an external instrument. You can also load your own SoundFont (.sf2) files to swap in the sounds you like. The mixer lets you adjust the volume balance of each track, the master output, and the reverb and delay send amounts. You can still route the MIDI output to an external instrument as before, and the manual includes setup examples for DAWs such as FL Studio, Cubase, Ableton Live, Pro Tools and Reaper. Note that in Logic Pro it can no longer be used as a MIDI effect and is instead loaded as an audio instrument (dragging and dropping generated MIDI onto other tracks is still possible).
Main Specs
| Item | Details |
|---|---|
| Type | MIDI generator (instrument plugin with built-in sound source) |
| Tracks / Scenes | Up to 6 tracks, up to 8 scenes per section |
| Built-in instruments | Acoustic piano, General MIDI-style sounds, SoundFont (.sf2) loading |
| Built-in effects | Reverb and delay (send effects) |
| Supported OS (Mac) | macOS 10.13 or later (Universal / ARM build) |
| Supported OS (Windows) | Windows 8 or later (64-bit) |
| Recommended system | Multi-core CPU at 2 GHz or faster, 4 GB RAM or more, display of 1920 x 1080 or larger |
3. Differences from the Previous Version, InstaComposer 3
Basic features up to InstaComposer 3 (one-click song generation, 6 tracks x 8 scenes, chord and scale analysis, MIDI editor, import and export, and so on) carry over as they are. On top of that, InstaComposer 4 brings the following changes.
| Item | Changes in InstaComposer 4 |
|---|---|
| MIDI Engine 2.0 | The generation engine has been completely rebuilt. Rhythmic feel, note selection, timing and phrasing are improved in the Melody, Ostinato, Chord, Rhythm and Drums modes. Dedicated handling and tuned weighting are provided for commonly used time signatures. |
| New generation modes | Two modes added: Arpeggiator and Rhythm V2. |
| Whole-song generation | More variation and more cohesive arrangements. Chord progressions fit the scale better and choose more purposeful harmony. |
| Built-in instrument and mixer | New. Includes an acoustic piano and General MIDI-style sounds, SoundFont (.sf2) loading, and a mixer with reverb and delay, so playback works without an external instrument. |
| Foliage | New. Adds ornamental notes derived from the main melody, creating a thicker texture while keeping the core intact. The amount can be adjusted with Growth and other controls. |
| Groove controls | New. Directly control the rhythmic feel with Syncopation, Gallop, Density, Burst, Congestion and more. |
| Timeline playback | New. Jump directly to any beat in the song to audition and edit. |
| UI | Redesigned with a cleaner layout. |
| Handling in Logic Pro | Because the instrument is now built in, it is loaded as an audio instrument instead of a MIDI effect. |
| Preset compatibility | Presets from InstaComposer 1, 2 and 3 can be loaded. |
InstaComposer 3 users can upgrade to InstaComposer 4 for $10 from the product page on the official site.
That is the latest on the InstaComposer 4 sale. Be sure to check Plugin Boutique and other stores for more plugin deals, as you may find some great offers.

